Earphone



FIG. 1 is a right side view of an earphone;

FIG. 2 is a left side view;

FIG. 3 is a bottom view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a bottom right side perspective view thereof; and,

FIG. 7 is a top right side perspective view thereof.

The broken lines form no part of the claimed design. 

CLAIM The ornamental design for an earphone, as shown and described. 